Handle fastening device



Oct. 20, 1936. M. PLN

Y HANDLE FASTENING DEVICE Filed Deo. 5, 1935 Fig. 6.

Patented Oct. 20, 1936 ATENT OFFICE In Switzerland 6 Claims.

The problem of attaching the handle tothe body of an implement, as for example a scrubber, a broom, a tool, an agricultural implement, and so forth has not hitherto been solved in a; completely satisfactory manner, because the devices known hitherto did not afford the desired degree of security; principally because the stress during use of the implement always acted upon the fastening part and thus loosening of the handle lor its auxiliary devices necessarily occurred.

Devices have already become known in which a handle socket is provided with a plate slidable into the body of the implement, to give the handle a deeper seating and thereby a better hold. Here also however, only a conditional solution is provided because once again the handle had tov be secured in the socket by nails, screws, or pressure. The plate on the socket also needed additional securing means as screws, clamps, and so forth to be made fast to the implement body, which afforded a further possibility of loosening.

The present invention relates to a device which overcomes all these disadvantages by the three implement parts, the body, handle socket with plate, and handle with screw, being secured together into an intimate unyielding whole by means of the handle and screw. It is characterized by the screw secured to the handle and serving as the sole fastening means, not only effecting the connection of the handle with the implement body but also, passing through the holding plate, securing the latter in its seat in the implement'body against sliding out. By this construction the shock, pull and blow action is prevented from acting solely through the point of attachment.

The holding plate of the member forming the connection between the implement body and the handle can be so formed that it lies sunk in a recess in the implement body and completely lls the recess. An intimate connection of the connecting member with the implement body is thereby provided over a broad seating surface and the stress during work must take effect primarily on the implement body itself.

The unyielding connection of the three parts of the implement is elfected by the handle and screw being screwed into the socket of the connecting member and through the holding plate into the implement body. This renders unnecessary a separate fastening of the holding plate to the implement body and of the handle to the socket. Further convenient exchange of the parts is rendered possible.

Some examples embodying the present in- December 7, 1934 the accompanying Figure 6 shows a second embodiment applied to a broom.

Figure 7 relates to a further embodiment.

The implement body I (Figures 1 and 2) this case a scrubber, has on both sides a.Y slot 2 machined into its body; into one of these slots is sunk a metal with a handle socket 3e. tered into the socket 3a.

The handle E is two plate 3 which is provided At the entering end the handle S is provided with a screw 5 extending longitudinally of the handle axis.

'Ihe plate has a through, tapped hole d which serves to receive the screw 5 of the handle S. A

flattened shank part 5a which is let into the handle end and there rmly attached to the handle by cross rivets I serves to secure the screw 5 to the handle 6. handle socket 3a in the implement at the junction with the socket with a thicke The is accommodated in a recess 8 body. The plate 3 is provided ning 9 which fits exactly in the corresponding part of the recess 8 and is provided to prevent rotation of the plate 3 during screwing of the handle 6 the implement body and during use.

Further the implement body is provided a tapped hole la into with

axially of the handle, and the screw 5 made of such length that in xing the handle it can be screwed through the tapped 4 of the plate 3 hole and into the tapped hole la in the implement body l, in order to secure the plate 3 in the body I rigid structure. During manipulation of and to unite the whole into a the implement all forces are directly transmitted to the implement body itself. The place of tachment ls more or less relieved of load, loosening of the atand handle is practically excluded.

When the scrubber is worn on one side the handle can be transferred to the other side. The ond slot 2 with a corresponding recess 8 secand

tapped hole Ia are provided for this reason.

The handle fastening for a broom as shown in Figure 6 is effected in a similar manner, but

with

the difference that here only one slot 2 for the securing plate 3 needs to be provided and it lies parallel to the back surface of the implement body, as the handle stands not inclined as before, but perpendicular to the cleaning surface.

As can be seen in the drawing, the plate segmental in form and the slot 2 is machined in the implement body of corresponding segmental form. Thus with easy working of the sl In the embodiment of Figure '7 which relates to a hammer haft fastening, the base plate 3 on the haft socket 3a is fitted into a corresponding notch 2 in the hammer head I. The screw 5 in the haft 6 is here also screwed through the plate 3 into the hammer head l and as single fastening means effects fastening of the haft to the hammer head and the securing of the plate 3 therein against sliding out.

l. A device for securing a handle to an implement body comprising an implement body having a slot therein, a holding plate fitting in said slot and having a handle socket, a handle and means upon said handle securing said handle to said implement body and at the same time iixedly securing said holding plate to said implement body. 2. A device for securing a handle to an implement body comprising an implement body having a slot therein, a holding plate tting in said slot and having av handle socket, a handle and a. threadedfmember upon said handle securing said handle to said implement body and at the same time xedly securing said holding plate to said implement body.

' 3. A device for securing a handle to an implementrbody comprising an implement body having a slot therein, a holding plate having a handle socket integral therewith located in said slot,` said implement body and said holding plate having alined apertures, a handle and means upon said handle cooperating with said alined apertures for securing said handle to said implement body and at the same -time xedly securing said holding plate to said implement body.

having threaded alined apertures, a handle and a screw upon said handle cooperating with said alined apertures Vfor securing said handle to said implement body and at the same time xedly securing said holding plate to said implement body.

5. A device for securing a handle to an implerknient body comprising an implement body having,

'a slot therein and a recess communicating with said slot, a holding plate fitting in said slot, a handle socket integral with said plate extending through said recess, said socket and said recessY being of such configuration as to prevent rotation of said holding plate in said slot, a handle and means yupon said handle securing said handle to said implement body and at the same time iixedly securing said holding plate to said implement body. d Y

V6. A device for securing a handle to an implement body comprising an implementbody having a slot therein andY a recess communicating with said slot, a holding plate fitting in said slot, a handlel socket integral with Said plate extending through'said recess, said socket and said recess beingA of` suchconguration as to prevent rotation of said holding platey in said slot, said holding plate and said implement body having alined threaded apertures,V a handle and a screw upon said handle cooperating with said alined apertures Vfor securing said handle to said implement body and at the same time fixedly securing said holding plate to said implement body.

; MAX PLN. Y

ist] 

